Pipeline sealing device for pipeline hydrostatic test

Abstract

The utility model relates to a pipeline sealing device, belongs to the technical field of pipeline sealing equipment, in particular to a pipeline sealing device for a pipeline hydrostatic test, which comprises a pipeline body and a sealing assembly, a fixing plate is arranged on the pipeline body, and the sealing assembly comprises a half-thread bolt, an air bag, an air delivery pipe, a sealing gasket, a gasket and a nut. According to the pipeline sealing device, the sealing assembly is matched with the nut through the half-thread bolt, the first through hole, the air bag, the air conveying pipe, the sealing gasket, the second through hole, the gasket and the nut, so that the sealing gasket is convenient to disassemble and replace, the matched sealing gasket can be replaced according to the diameters of different pipeline bodies, the pipeline sealing device can adapt to pipelines of different sizes, and the practicability of the pipeline sealing device is improved; and the fixing assembly is matched with a rotary knob through a fixing box, a fixing ring, a sliding groove, a clamping block, a connecting column, a worm gear, a groove, a worm and the rotary knob, the pipeline body is clamped through the clamping block, and therefore the device is convenient to mount and dismount, and the device is more convenient and faster to use.

Description

Technical Field

[0001] This utility model relates to the technical field of pipeline sealing equipment, specifically a pipeline sealing device for pipeline water pressure testing. Background Technology

[0002] Pipelines are widely used in various fields. Among the many properties of pipelines, their airtightness is crucial. Therefore, passing the airtightness test has become the primary qualification standard for pipelines.

[0003] Chinese patent CN218094901U discloses a pipe sealing device for pipe hydrostatic testing, comprising a pipe body, a first clamping block and a second clamping block fitted on the pipe body, and fixing blocks fixedly connected to both sides of the first clamping block and the second clamping block. Each pair of fixing blocks has a through hole through which a bolt passes, and a nut is threaded to the end of the bolt. A connecting rod is fixedly connected to the right side of the second clamping block, and a round block is fixedly connected to the other end of the connecting rod. A first sealing block is provided inside the pipe body, a second sealing block is fixedly connected to the right side wall of the first sealing block, and a third sealing block is fixedly connected to the right side of the second sealing block. This patent is applicable to pipes of different diameters and is easy to install and disassemble.

[0004] In the above technical solution, three sealing blocks of different diameters are used to adapt to three different diameter pipes. However, when encountering pipes of other diameters, the three sealing blocks are fixedly connected and difficult to disassemble, making the device unable to adapt to pipes of other diameters, thus resulting in low practicality of the device.

[0005] Based on this, this application proposes a pipeline sealing device for pipeline hydrostatic testing. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model proposes a pipe sealing device for pipe hydrostatic testing. This device allows for the replacement of sealing gaskets of different sizes with sealing components to accommodate pipes of different sizes. The fixing components facilitate the installation and disassembly of the device, thereby improving its practicality.

[0007] The technical solution to achieve the purpose of this utility model is: a pipeline sealing device for pipeline water pressure testing, including a pipeline body, a fixing plate provided on the pipeline body, and further comprising;

[0008] A sealing assembly includes a half-threaded bolt, a first through hole, an air bladder, an air supply pipe, a sealing gasket, a second through hole, washers, and a nut. The half-threaded bolt is movably inserted into a fixed plate. The first through hole is formed on the half-threaded bolt. The air bladder is fixedly connected to the half-threaded bolt. The air supply pipe is fixedly connected to the air bladder and passes through the first through hole. The sealing gasket is disposed on the fixed plate. The second through hole is formed on the sealing gasket. The half-threaded bolt passes through the second through hole. Two washers are movably inserted into both ends of the half-threaded bolt. The nut is threadedly connected to the half-threaded bolt. A fixing assembly is provided on the fixed plate.

[0009] Preferably, the fixing component includes a fixing box and a fixing ring, the fixing box being fixedly connected to the fixing plate, and the fixing ring being fixedly connected inside the fixing box.

[0010] Preferably, the fixing component further includes slides and clamping blocks, with four slides formed on the fixing ring and four clamping blocks slidably connected to the four slides respectively.

[0011] Preferably, the fixing assembly further includes connecting columns and worm gears, with the four connecting columns respectively fixedly connected to the four clamping blocks, and the worm gear rotatably connected to the fixing ring.

[0012] Preferably, the fixing component further includes grooves, four grooves are formed in the worm gear, and four connecting posts are respectively disposed in the four grooves.

[0013] Preferably, the fixing assembly further includes a worm gear and a knob, the worm gear being rotatably connected inside the fixing box, the worm wheel meshing with the worm gear, and the knob being fixedly connected to the worm gear.

[0014] Compared with existing technologies, the significant advantages of this invention are:

[0015] Firstly, in this utility model, the sealing assembly is made of a half-threaded bolt, through hole one, air bladder, air supply pipe, sealing gasket, through hole two, gasket and nut, which makes the sealing gasket easy to disassemble and replace. It can be replaced with a matching sealing gasket according to the diameter of different pipe bodies, so that the device can adapt to pipes of different sizes and improve the practicality of the device.

[0016] Secondly, in this utility model, the fixing component is made of a fixing box, fixing ring, sliding groove, clamping block, connecting column, worm gear, groove, worm and knob. The clamping block clamps the pipe body, making the device easy to install and disassemble, and making the device more convenient to use. Attached Figure Description

[0017] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 This is a cross-sectional view of the internal structure of this utility model;

[0020] Figure 3 This is an exploded structural diagram of the sealing component in this utility model;

[0021] Figure 4 This is a cross-sectional view of the internal structure of the fixing box in this utility model;

[0022] Figure 5 This is a cross-sectional view of the internal structure of the worm gear in this utility model;

[0023] Figure 6 This is a cross-sectional view of the internal structure of the fixing ring in this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Pipe body; 2. Fixing plate; 3. Half-threaded bolt; 4. Through hole one; 5. Airbag; 6. Gas pipe; 7. Sealing gasket; 8. Through hole two; 9. Gasket; 10. Nut; 11. Fixing box; 12. Fixing ring; 13. Slide groove; 14. Clamping block; 15. Connecting column; 16. Worm gear; 17. Groove; 18. Worm; 19. Knob. Detailed Implementation

[0026] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0027] This utility model provides an improved pipe sealing device for pipe hydrostatic testing. The technical solution of this utility model is as follows:

[0028] like Figures 1-6 As shown, a pipe sealing device for a pipe hydrostatic test includes a pipe body 1, a fixing plate 2 on the pipe body 1, and further includes;

[0029] The sealing assembly includes a half-threaded bolt 3, a first through-hole 4, an air bladder 5, an air supply pipe 6, a sealing gasket 7, a second through-hole 8, a washer 9, and a nut 10. The half-threaded bolt 3 is movably inserted into the fixed plate 2. The cross-section of the half-threaded bolt 3 is T-shaped. The first through-hole 4 is formed on the half-threaded bolt 3, and its diameter is equal to the diameter of the air supply pipe 6. The air bladder 5 is fixedly connected to the half-threaded bolt 3, and the air supply pipe 6 is fixedly connected to the air bladder 5, passing through the first through-hole 4. The sealing gasket 7 is located on the fixed plate 2, and its diameter is equal to the inner wall diameter of the pipe body 1. The second through-hole 8 is formed on the sealing gasket 7. The fixed plate 2 has a through-hole with a diameter equal to... The diameter of the through hole 2 8 is consistent. The half-threaded bolt 3 passes through the through hole 2 8. Two washers 9 are respectively movably inserted into both ends of the half-threaded bolt 3. One washer 9 is located between the head of the half-threaded bolt 3 and the sealing gasket 7, and the other washer 9 is located between the nut 10 and the fixing plate 2. The two washers 9 are used to block the through hole 2 8 and the through hole on the fixing plate 2. The nut 10 is threadedly connected to the half-threaded bolt 3. The sealing gasket 7 is easy to disassemble and replace through the sealing assembly. It can be replaced with a matching sealing gasket 7 according to the diameter of different pipe bodies 1, so that the device can adapt to pipes of different sizes and improve the practicality of the device. The fixing plate 2 is provided with a fixing assembly.

[0030] Furthermore, such as Figures 1-6 As shown, the fixing assembly includes a fixing box 11 and a fixing ring 12. The fixing box 11 is fixedly connected to the fixing plate 2, and the fixing ring 12 is fixedly connected inside the fixing box 11. The inner diameter of the fixing ring 12 is larger than the diameter of the pipe body 1.

[0031] Furthermore, such as Figures 2-6 As shown, the fixing assembly also includes a slide groove 13 and a clamping block 14. Four slide grooves 13 are formed on the fixing ring 12. The slide grooves 13 are arranged in a circular array with the center of the fixing ring 12 as the center. The clamping block 14 has an arc-shaped cross section at one end near the pipe body 1. The four clamping blocks 14 are slidably connected to the four slide grooves 13 respectively.

[0032] Furthermore, such as Figures 2-6 As shown, the fixing assembly also includes connecting posts 15 and worm gears 16. The four connecting posts 15 are fixedly connected to the four clamping blocks 14 respectively. The thickness of the connecting posts 15 is greater than the thickness of the clamping blocks 14. The worm gears 16 are rotatably connected to the fixing ring 12. The diameter of the worm gears 16 is equal to the diameter of the fixing ring 12.

[0033] Furthermore, such as Figure 5 As shown, the fixing component also includes grooves 17. Four grooves 17 are formed in the worm gear 16. The cross-section of the grooves 17 is arc-shaped. The grooves 17 are arranged in a circular array with the center of the worm gear 16 as the center. Four connecting posts 15 are respectively set in the four grooves 17.

[0034] Furthermore, such as Figure 1 and Figure 4 As shown, the fixing assembly also includes a worm gear 18 and a knob 19. The worm gear 18 is rotatably connected inside the fixing box 11, and the worm wheel 16 meshes with the worm gear 18. The knob 19 is fixedly connected to the worm gear 18. The length of the worm gear 18 is equal to the length of the inner wall of the fixing box 11. The fixing assembly makes the device easy to install and disassemble, making the device more convenient to use.

[0035] The specific working method is as follows: When the diameter of the pipe body 1 changes, rotate the nut 10. Since the nut 10 is threaded onto the half-threaded bolt 3, the nut 10 disengages from the half-threaded bolt 3 as it rotates. At this time, the half-threaded bolt 3 is no longer restricted and can be separated from the fixing plate 2. The sealing gasket 7 sandwiched between the half-threaded bolt 3 and the fixing plate 2 can then be removed. Replace it with a sealing gasket 7 that matches the diameter of the pipe body 1. Then, put the matching sealing gasket 7 onto the half-threaded bolt 3, and then insert the half-threaded bolt 3 into the fixing plate 2, so that the sealing gasket 7 is located between the half-threaded bolt 3 and the fixing plate 2. Finally, thread the nut 10 onto the half-threaded bolt 3, so that the half-threaded bolt 10 is threaded onto the half-threaded bolt 3. The threaded bolt 3 and the fixing plate 2 clamp the sealing gasket 7, and then the sealing gasket 7 is embedded into the pipe body 1. Air is supplied to the airbag 5 through the air supply pipe 6, so that the airbag 5 is in contact with the inner wall of the pipe body 1. Then, the knob 19 is turned, which drives the worm gear 18 to rotate. Since the worm wheel 16 meshes with the worm gear 18, the worm wheel 16 rotates accordingly, which drives the groove 17 to rotate. Since the connecting column 15 is located in the groove 17, the connecting column 15 moves with the rotation of the groove 17, which drives the clamping block 14 to move toward the surface of the pipe body 1. The clamping block 14 is used to clamp the pipe body 1, thereby completing the fixation of the device. At this time, the water pressure test can be performed on the pipe.

[0036] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. A pipe sealing device for a pipe hydrostatic test, comprising a pipe body (1), characterized in that: The pipe body (1) is provided with a fixing plate (2), and also includes; The sealing assembly includes a half-threaded bolt (3), a through hole one (4), an airbag (5), an air supply pipe (6), a sealing gasket (7), a through hole two (8), a gasket (9), and a nut (10). The half-threaded bolt (3) is movably inserted into the fixing plate (2). The through hole one (4) is opened on the half-threaded bolt (3). The airbag (5) is fixedly connected to the half-threaded bolt (3). The air supply pipe (6) is fixedly connected to the airbag (5). The air supply pipe (6) passes through the through hole one (4). The sealing gasket (7) is provided on the fixing plate (2). The through hole two (8) is opened on the sealing gasket (7). The half-threaded bolt (3) passes through the through hole two (8). The two gaskets (9) are movably inserted into the two ends of the half-threaded bolt (3). The nut (10) is threadedly connected to the half-threaded bolt (3). The fixing plate (2) is provided with a fixing assembly.

2. The pipeline sealing device for pipeline hydrostatic testing according to claim 1, characterized in that: The fixing assembly includes a fixing box (11) and a fixing ring (12). The fixing box (11) is fixedly connected to the fixing plate (2), and the fixing ring (12) is fixedly connected inside the fixing box (11).

3. The pipeline sealing device for pipeline hydrostatic testing according to claim 2, characterized in that: The fixing component also includes a slide groove (13) and a clamping block (14). The four slide grooves (13) are formed on the fixing ring (12), and the four clamping blocks (14) are slidably connected in the four slide grooves (13).

4. The pipeline sealing device for pipeline hydrostatic testing according to claim 3, characterized in that: The fixing assembly also includes connecting posts (15) and worm gears (16). The four connecting posts (15) are fixedly connected to the four clamping blocks (14) respectively, and the worm gears (16) are rotatably connected to the fixing ring (12).

5. The pipeline sealing device for pipeline hydrostatic testing according to claim 4, characterized in that: The fixing component also includes grooves (17), four grooves (17) are formed in the worm gear (16), and four connecting posts (15) are respectively provided in the four grooves (17).

6. The pipeline sealing device for pipeline hydrostatic testing according to claim 4, characterized in that: The fixing assembly also includes a worm (18) and a knob (19). The worm (18) is rotatably connected to the fixing box (11), and the worm wheel (16) meshes with the worm (18). The knob (19) is fixedly connected to the worm (18).

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